Are the housing cracked or sratched. Be sure. Scratched=resurfaced
cracked= trash or scrap metal.

Again just make sure. Who is doing the work on the motor if you dont mind the asking?

I have a guy here in tampa that has a 1st gen with a 93 motor he got 575hp at the wheel with just a street port. He is carburated, the car just got sent to PR to get tuned by Rafaelito (Rafaelito Used to be fastest rotary in world) Still upthere with the best. Let me know i can have him do your work. Hes brother is my mechanic here but I have to send him a ticket to come over and work on my engine.

Jorge